Local residents will work with professional and skilled volunteers on the nationally important archaeological monument in Whitehawk.
A series of volunteering opportunities, workshops and events will be run at Brighton Museum & Art Gallery, Whitehawk Camp and other venues over the next 12 months.
Volunteers will learn the necessary skills required to catalogue and examine archaeological finds, undertake geophysical survey, excavate archaeological remains and carry out conservation work to the monument.
A series of outreach events will examine themes such as our relationship with food, the biodiversity of Whitehawk Hill and Whitehawk Hill's relationship with the wider Downland landscape.
Stuart McLeod, Head of the Heritage Lottery Fund South East, said:
"Whitehawk Hill holds hidden clues as to the way our ancestors lived and how the community around here developed into what it is today.
"By delving into this history, volunteers will not only expand their knowledge and learn lots of new skills, but it will also provide a unique record of the area for others to learn, enjoy and be inspired by."
Results from the project will be interpreted through digital media and an archaeological archive report.
This project will focus on Whitehawk Camp and the collection of objects excavated from the site in the1920s and 1930s.
The 5,500 year old Stone Age monument (a Neolithic Causewayed Enclosure) on Whitehawk Hill is a rare type of ritual monument (predating Stonehenge by around 500 years) and marks the emergence of Britain's first farming communities.
Commenting on the award, Dr Dominic Perring, the Director of the UCL Centre for Applied Archaeology, added::
"This is what archaeology should be about: a chance for everyone to participate in the adventure of discovery on a really important site.
"There are some fantastic events planned, and we look forward to learning a lot more about what happened at Brighton in the early Neolithic (New Stone Age)."
The project will work with the local community to build understanding of the importance of the monument and actively work for the physical improvement of the site and its archive.